Floor model. Size: 19 3/4"w x 20 7/8"d x 34 5/8"h. AF Forte heater stays on low power so it is ready for use at any time. It stores thermal energy that releases as soon as you open the lid.There is no heat up time. Provides flexible heat with excellent steam output. Ideal for those who take a sauna 3 or more times a week and don't like to wait. Digital control comes with the heater. 225 lbs. stones. Available in 4.4, 6.5, and 9.8 KW sizes.